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Old 02-25-13, 07:32 PM   #22
S-F
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No. No VB on the inside. You already have one on the outside. When moisture gets into the wall, how is it going to dry out? Not only is it a code violation, it's a recipe for rot and IAQ issues.

Check out these articles:

Do I Need a Vapor Retarder? | GreenBuildingAdvisor.com

All About Wall Rot | GreenBuildingAdvisor.com


@ mikesolar, the first one describes the various classes of vapor retarders. In it there is also a link to a BSC paper on the subject.
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